A least-squares curve fit of the data in the table results in a best-fit straight line with the equation X y = 0.615x + 1.35. 2 3 If the y value of a new measurement is 3.86, what is the corresponding x value and the uncertainty in the x 4 4 value? The uncertainty in y (s, ) is 0.196. 6 5 X= Suppose y was measured five times and average of these five measurements was 3.86. What is the uncertainty in x based on these five measurements